I meant owners that are non-profit and non-government owned that are dedicated to serving specific groups with special, unique or identifying cultures, such as those who speak the roughly 120 indigenous languages in Mexico or even Spanish speakers of that heritage who preserve the cultures of those indigenous groups. Mexico has severe limitations on religious stations, so we don't have the profusion of that kind of non-profit operation that we see in the U.S., but they do have many serving ethnocultural "special interest" groups.
Many of those groups are in more isolated highly rural and often distant or mountainous regions of Mexico, where AM is able to reach those communities, often in river valleys or "desert oasis" settings where terrain or distance prevents FM from covering wide areas.
Cuba jams and has jammed stations it found offensive. 1140 in Miami was the first to be jammed extensively, along with Radio Swan / Radio Americas 1165 which was on Swan Island, a joint Honduran / US island. Then, as they appeared, Radio Martí, 710 in Miami and a number of the U.S. clear channel. stations the VOA rented overnight time on in the 60's to broadcast to Cuba.
If not jammed by local signals in Cuba (which is 800 miles wide) a number of Miami stations are totally listenable in the north coast region of central Cuba, including La Habana. Those range from 560, 610, 670, 710, 790 and others in Miami even to ones like 620 and 970 from the Tampa Bay market. And little WKWF on 1600 used to be heard in La Habana before Castro came to power.
